diff --git a/lib/cache/cache.js b/lib/cache/cache.js
index 9b3110860cd..9fe24b742ad 100644
--- a/lib/cache/cache.js
+++ b/lib/cache/cache.js
@@ -112,14 +112,12 @@ class Cache {
     // 5.5.2
     for (const response of responses) {
       // 5.5.2.1
-      const responseObject = new Response(response.body?.source ?? null)
-      const body = responseObject[kState].body
+      const responseObject = new Response(null)
       responseObject[kState] = response
-      responseObject[kState].body = body
       responseObject[kHeaders][kHeadersList] = response.headersList
       responseObject[kHeaders][kGuard] = 'immutable'
 
-      responseList.push(responseObject)
+      responseList.push(responseObject.clone())
     }
 
     // 6.
@@ -146,8 +144,6 @@ class Cache {
     webidl.brandCheck(this, Cache)
     webidl.argumentLengthCheck(arguments, 1, { header: 'Cache.addAll' })
 
-    requests = webidl.converters['sequence<RequestInfo>'](requests)
-
     // 1.
     const responsePromises = []
 
@@ -155,7 +151,17 @@ class Cache {
     const requestList = []
 
     // 3.
-    for (const request of requests) {
+    for (let request of requests) {
+      if (request === undefined) {
+        throw webidl.errors.conversionFailed({
+          prefix: 'Cache.addAll',
+          argument: 'Argument 1',
+          types: ['undefined is not allowed']
+        })
+      }
+
+      request = webidl.converters.RequestInfo(request)
+
       if (typeof request === 'string') {
         continue
       }
diff --git a/package.json b/package.json
index 3d5f7ed20c5..32af945e17c 100644
--- a/package.json
+++ b/package.json
@@ -86,7 +86,7 @@
     "test:tdd:node-test": "borp -p \"test/node-test/**/*.js\" -w",
     "test:typescript": "tsd && tsc --skipLibCheck test/imports/undici-import.ts",
     "test:websocket": "borp --coverage -p \"test/websocket/*.js\"",
-    "test:wpt": "node test/wpt/start-fetch.mjs && node test/wpt/start-FileAPI.mjs && node test/wpt/start-mimesniff.mjs && node test/wpt/start-xhr.mjs && node test/wpt/start-websockets.mjs",
+    "test:wpt": "node test/wpt/start-fetch.mjs && node test/wpt/start-FileAPI.mjs && node test/wpt/start-mimesniff.mjs && node test/wpt/start-xhr.mjs && node test/wpt/start-websockets.mjs && node test/wpt/start-cacheStorage.mjs",
     "coverage": "nyc --reporter=text --reporter=html npm run test",
     "coverage:ci": "nyc --reporter=lcov npm run test",
     "bench": "PORT=3042 concurrently -k -s first npm:bench:server npm:bench:run",
diff --git a/test/wpt/server/server.mjs b/test/wpt/server/server.mjs
index d12b4936978..9a8bad4b83a 100644
--- a/test/wpt/server/server.mjs
+++ b/test/wpt/server/server.mjs
@@ -370,6 +370,42 @@ const server = createServer(async (req, res) => {
       res.end()
       return
     }
+    case '/service-workers/cache-storage/this-resource-should-not-exist':
+    case '/service-workers/cache-storage/this-does-not-exist-please-dont-create-it': {
+      res.statusCode = 404
+      res.end()
+      return
+    }
+    case '/service-workers/cache-storage/resources/vary.py': {
+      if (fullUrl.searchParams.has('clear-vary-value-override-cookie')) {
+        res.setHeader('cookie', '')
+        res.end('vary cookie cleared')
+        return
+      }
+
+      const setCookieVary = fullUrl.searchParams.get('set-vary-value-override-cookie') ?? ''
+
+      if (setCookieVary) {
+        res.setHeader('set-cookie', `vary-value-override=${setCookieVary}`)
+        res.end('vary cookie set')
+        return
+      }
+
+      const cookieVary = req.headers.cookie?.split(';').find((c) => c.includes('vary-value-override='))
+
+      if (cookieVary) {
+        res.setHeader('vary', `${cookieVary}`)
+      } else {
+        const queryVary = fullUrl.searchParams.get('vary')
+
+        if (queryVary) {
+          res.setHeader('vary', queryVary)
+        }
+      }
+
+      res.end('vary response')
+      return
+    }
     default: {
       res.statusCode = 200
       res.end(fullUrl.toString())
diff --git a/test/wpt/status/service-workers/cache-storage.status.json b/test/wpt/status/service-workers/cache-storage.status.json
index 09a291e4dbb..e61e8b73e9b 100644
--- a/test/wpt/status/service-workers/cache-storage.status.json
+++ b/test/wpt/status/service-workers/cache-storage.status.json
@@ -17,7 +17,8 @@
     "cache-match.https.any.js": {
       "note": "requires https server",
       "fail": [
-        "cors-exposed header should be stored correctly."
+        "cors-exposed header should be stored correctly.",
+        "Cache.match ignores vary headers on opaque response."
       ]
     }
   }